Analysis of the applicability of collision probability algorithms for nonlinear relative motion
文献类型：期刊论文
| 作者 | Xu XiaoLi1,2; Xiong YongQing1,2 |
| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2013-05-01 |
| 卷号 | 56期号:5页码:1041-1046 |
| 关键词 | space debris collision probability nonlinear relative motion integral limits |
| ISSN号 | 1674-7348 |
| 通讯作者 | Xu, XL (reprint author), Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China. Email: xlxu@pmo.ac.cn |
| 英文摘要 | In the calculation of the collision probability between space objects, the assumption of linear relative motion is generally adopted to simplify the problem because most encounters are at high relative velocity. Nevertheless, the assumption is no longer valid for encounters at extremely low velocities, and a new algorithm is urgently needed for computing collision probability for space objects having nonlinear relative motion. In this particular case, the direction associated with relative velocity is reintroduced for integration. The different integral limits would lead to the variations of probability and integral time. Moreover, the application scope of this new algorithm is also presented. Since the nonlinear effect is only significant in some certain situations, the new algorithm needs to be considered only in such certain situations. More specifically, when space objects in circular orbits encounter with a tiny inclined angle (the extreme situation), the new algorithm can derive much more accurate collision probability than the linear method, that is to say, the linearity assumption involved in general collision probability formulation is not adequate anymore. In addition, the deviation of the probability derived by the linear method (linear collision probability) from that derived by the nonlinear method (nonlinear collision probability) also weakly depends on the relative distance and combined covariance, and essentially depends on their ratio. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | OBJECTS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000318516200027 |
| 公开日期 | 2014-01-08 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/9818]  |
| 专题 | 紫金山天文台_空间目标与碎片观测研究基地 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Key Lab Space Object & Debris Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu XiaoLi,Xiong YongQing. Analysis of the applicability of collision probability algorithms for nonlinear relative motion[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2013,56(5):1041-1046. |
| APA | Xu XiaoLi,&Xiong YongQing.(2013).Analysis of the applicability of collision probability algorithms for nonlinear relative motion.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,56(5),1041-1046. |
| MLA | Xu XiaoLi,et al."Analysis of the applicability of collision probability algorithms for nonlinear relative motion".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 56.5(2013):1041-1046. |
入库方式： OAI收割
来源：紫金山天文台
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